Invalid (static) method with Invoke-CimMethod

Question

I'm trying to set a value with the PowerShell cmdled Invoke-CimMethod, but I'm getting an error "Invalid method" and i'm at a bit of a loss at the moment. This is my code

Invoke-CimMethod -Query 'SELECT * FROM Win32_NetworkAdapterConfiguration WHERE IPEnabled=1' -MethodName EnableWINS -Arguments @{WINSEnableLMHostsLookup=[Boolean]$false}

According to the documentation, the argument "WINSEnableLMHostsLookup" should be a bool, but for some reason it just doesn't work this way.

https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/settcpipnetbios-method-in-class-win32-networkadapterconfiguration

Can anyone share some insights?

Answer 1

That is a static method, like in any programming language, not an instance method. You don't need to run some kind of constructor first, or find an existing object. It sets a default. Use -classname with static methods. It's not the most user friendly or well documented.

Invoke-CimMethod -ClassName Win32_NetworkAdapterConfiguration -Arguments @{WINSEnableLMHostsLookup=$false} -MethodName EnableWINS

# or arguments by position
Invoke-CimMethod Win32_NetworkAdapterConfiguration @{WINSEnableLMHostsLookup=$false} EnableWINS

Old way with the wmiclass type accelerator:

$NicClass = [wmiclass]'Win32_NetworkAdapterConfiguration'
$NicClass.EnableWINS($false, $false) 

CIM is self-documenting if you really want to dig into it. The qualifiers will say whether a method is static.

get-cimclass Win32_NetworkAdapterConfiguration | % cimclassmethods | 
  select name,qualifiers

Name       Qualifiers
----       ----------
EnableWINS {Implemented, MappingStrings, Static, ValueMap}

Hmm, what is "CQL"?